That’s a good question because I personally take a lot of them and have done so for many years —– but never without consulting with my personal physician first. I never make a move without talking to my doctor first and obtaining his approval of what I am proposing to do.
Here is a short paragraph from the beginning of a U.S. Government publication about Vitamin and Mineral Supplements:
First and foremost, nutritional needs should be met by eating a variety of foods as outlined in the Dietary Guidelines for Americans. In some cases, vitamin/mineral supplements or fortified foods may be useful for providing nutrients that may otherwise be eaten in less than recommended amounts. If you are already eating the recommended amount of a nutrient, you may not get any further health benefit from taking a supplement. In some cases, supplements and fortified foods may actually cause you to exceed safe levels of intake of nutrients.
AND HERE IS A LINK TO THE ENTIRE ARTICLE FROM WHICH THE EXCERPT WAS TAKEN: https://www.nutrition.gov/dietary-supplements/questions-to-ask-before-taking-vitamins-and-mineral-supplements